facebook outage

Niels Bakker niels=nanog at bakker.net
Tue Oct 5 09:17:40 UTC 2021

* jllee9753 at gmail.com (John Lee) [Tue 05 Oct 2021, 01:06 CEST]:
>I was seeing NXDOMAIN errors, so I wonder if they had a DNS outage 
>of some sort??

Were you using host(1)? Please don't, and use dig(1) instead. There 
were as far as I know at no point NXDOMAINs being returned, but due to 
the SERVFAILs host(1) was silently appending your local search domain 
to your query which would lead to incorrect NXDOMAIN output.

	-- Niels.

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